基于分光光度法的小型水质四参数合一自动监测仪  

Small-scale water quality four-in-one automatic monitoring instrument based on spectrophotometry

作　　者：茆文杰 孙奕[1,2] 花迪 黄晓丹 熊陈 MAO Wenjie;SUN Yi;HUA Di;HUANG Xiaodan;XIONG Chen(Nanjing Hydraulic and Hydrological Automation Research Institute,Ministry of Water Resources,Nanjing 210012,China;Hydrological and Water Resources Monitoring Engineering Technology Research Center,Ministry of Water Resources,Nanjing 210012,China)

机构地区：[1]水利部南京水利水文自动化研究所,江苏南京210012 [2]水利部水文水资源监控工程技术研究中心,江苏南京210012

出　　处：《电子设计工程》2024年第24期22-26,31,共6页Electronic Design Engineering

基　　金：国家重点研发计划(2019YFB2102000);中央级公益性科研院所基本科研业务费专项资金项目(Y922002)。

摘　　要：针对当前环保领域对水质参数监测的需求,研制了一种小型的氨氮、总磷、总氮、高锰酸盐指数四种参数合一的水质自动监测系统。该系统采用了基于分光光度法和使用ARM的多任务实时操作系统的方法,可同时进行四种水质参数的检测,也可以单独检测其中任一水质参数。通过按照环保标准对该系统进行性能检测,计算得出氨氮、总磷、总氮和CODMn的重复性误差分别为1.12%、1.93%、1.12%和1.09%,线性误差分别为2.38%、1.06%、0.79%和3.2%,均明显高于标准规定的误差要求。测试结果表明,该仪器测量精度高,运行稳定可靠,提高了测试效率。A small-scale water quality four parameter integrated automatic monitoring instrument based on spectrophotometry has been developed to meet the current demand for water quality parameter monitoring in the field of environmental protection.A small-scale water quality automatic monitoring system has been developed,which integrates four parameters:ammonia nitrogen,total phosphorus,total nitrogen,and permanganate index.The system adopts a method based on spectrophotometry and a multi task real-time operating system using ARM,which can simultaneously detect four water quality parameters or individually detect any of them.By conducting performance testing on the system according to environmental standards,the repeatability errors of ammonia nitrogen,total phosphorus,total nitrogen,and CODMn were calculated to be 1.12%,1.93%,1.12%and 1.09%,respectively.The linear errors were 2.38%,1.06%,0.79%and 3.2%,respectively,which were significantly higher than the error requirements specified in the standards.The test results show that the instrument has high measurement accuracy,stable and reliable operation,and improves testing efficiency.

关 键 词：分光光度法 多任务实时操作系统 高锰酸盐指数 水质自动监测仪 

分 类 号：TN98[电子电信—信息与通信工程]